The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2018
Filed:
Mar. 02, 2016
Applicant:
2y-chem, Ltd., Shanghai, CN;
Inventors:
Jinfeng Song, Shanghai, CN;
Xungui He, Shanghai, CN;
Wensheng Tang, Shanghai, CN;
Yuan Wang, Shanghai, CN;
Assignee:
2Y-CHEM, LTD., Shanghai, CN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/26 (2006.01); C07D 401/12 (2006.01); C07D 211/18 (2006.01); B01D 9/00 (2006.01);
U.S. Cl.
CPC ...
C07D 211/18 (2013.01); B01D 9/0054 (2013.01); B01D 9/0063 (2013.01); B01D 2009/0095 (2013.01);
Abstract
The present invention relates to 2-isopropoxy-5-methyl-4-(piperidin-4-yl) aniline dihydrochloride monohydrate and a preparation method of the same. The 2-isopropoxy-5-methyl-4-(piperidin-4-yl) aniline dihydrochloride monohydrate has a very good crystal form and is well suitable for recrystallization purification; further, the effect of impurity removal effect is very good, and any single impurity can be controlled less than 0.1%.